sign header logo

 {{# pageHeader}}
-<div class="yoho-header">
+<div class="blk-header">
     <div class="center-content">
         <div class="yoho-group-map">
             <span class="iconfont">&#xe600;</span>

 {{# navMenu}}
-    <div class="yoho-nav">
+    <div class="blk-nav">
         <div class="main-nav">
             <div class="center-content">
                 <ul class="main-nav-list">

-<div class="yoho-sign-header">
+<div class="blk-sign-header">
     <div class="center-content">
-        <div class="main-logo"></div>
+        <div class="main-logo">
+            <a href="{{siteUrl}}"></a>
+        </div>
         <ul class="header-tools right clearfix">
             <li>
                 {{#if userName}}

-.yoho-header {
+.blk-header {
     height: 50px;
     line-height: 50px;
     font-size: 12px;
@@ -231,7 +231,7 @@
     }
 }
 
-.yoho-nav {
+.blk-nav {
     .main-nav {
         height: 80px;
 

-.yoho-sign-header {
+.blk-sign-header {
     .center-content {
         height: 80px;
         border-bottom: 2px solid #eee;
@@ -9,6 +9,12 @@
         height: 80px;
         background: resolve('layout/sign-logo.png') no-repeat center center;
         display: inline-block;
+
+        > a {
+            display: inline-block;
+            width: 100%;
+            height: 100%;
+        }
     }
 
     .header-tools {